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Monitor maternal blood for environmental lead exposure. The Centers for Disease Control and Prevention recommends the following testing schedule for frequency of maternal blood lead follow-up during pregnancy.1 See table.
Result of Screening Test
Perform Diagnostic Test on Venous Blood
No follow-up is indicated.
Within one month. Obtain a maternal BLL or cord BLL at delivery.
Within one month and then every two to three months. Obtain a maternal BLL or cord BLL at delivery.
Within one to four weeks and then every month. Obtain a maternal BLL or cord BLL at delivery. Within 24 hours and then at frequent intervals depending on clinical interventions and trends in BLL. Consultation with a clinician experienced in the management of pregnant women with BLLs in this range is strongly advised. Obtain a maternal BLL or cord BLL at delivery.
Atomic absorption spectrometry (AAS) or inductively coupled plasma/mass spectrometry (ICP/MS)
Mix blood thoroughly to avoid clotting.
Maintain specimen at room temperature.
Causes for Rejection